Device for moistening color-ribbons.



No. 849,143; PATENTED APR. 2, 1907. F. A. LANGEN.

DEVICE FOR MOISTENING COLOR RIBBONS.

APPLICATION FILED FEB.12. l906.

PV/TNESSES 1' NVENTOR V5. Pwzm' -ZLLJHJ, flay 04%,

UNITE STATES .PATENT OFFICE. I

FRIEDRICH ADoLF LANGEN, OF ooLoe E-RIEIIL, GERMANY.

DEVICE FOR MOISTENING COLOR-RIBBONSQ Specification of LettersPatent.

.Pat'ented April 2, 1907.

Application filed February 12, 1906. Serial No. 300.562.

, rollers which are made of a material which absorbs moisture or which are covered with such material. The paint or fluid is supplied to the roller either by spreading it on the exterior thereof or by introducing it into an opening made in the roller for that purpose, the fluid then passing through holes from the interior to the surface of the roller. In the first case the paint or fluid must be spread over the roller at short intervals. In the second instance it can be renewed at longer.

intervals, since the interior of the roller is able to contain a larger guantity of fluid. As, however, it is essentia with all devices for coloring that the color-ribbon, whether used as an absorbent ribbon or as a ribbon with the coloring-matter spread over it, should have on it ,always a regular limited quantity of coloring-matter in order to obtain a uniform clear print, it is necessary that a a regulation of the supply of coloring-matter should take place in ,two ways. Care is therefore taken that, first, in a state of rest the damping-roller, and consequently the color-ribbon where it contacts with such roller, shall not be moistened too much, and, second, that it shall beossible toregulate the permeability of t e" damping-roller.

Only when these two conditions are fulfilled,

is it possible for the color-ribbon to have an even regulated amount of coloring-matter.

Figure 1 is a view in side elevation of my improved device: Fig. 2 is a similar view having the inking-roller removed. Fig. 3 is a view in side elevation of the roller of my device. Fig. 4 is a top plan" view thereof. Fig. 5 is a view in side elevation of the means which I employ for securing the sections of my improved roller together. Fig. 6 is a top plan view of said means. Fig. 7 1s a front elevation of a modification of my improved inking device, andFig: 8 is an end view of the same.

In the annexed drawings are represented two examples of such apparatus. According to Fig. 1 it consists of a tube a, which contains the fluid or coloring-matter, and of the roller 6 as moistener or damper. The tube a is closed at the top by a screw cap or valve 0 and at the bottom by a plug (1. In the lower end above this plug are many small a ertures 6, arranged in line longitudinally of the axis of the tube a, the function of said apertures being to permit the paint contained in a to pass through them.

The damping-roller bis composed of felt or cloth in the form of a hollow cylinder, which may, if desired, be built up from separate disks, as shown. The two ends of the cylina der are closed by metal disks f, which can be drawn together by screws in order to regulate byncompression the absorbing capacity of the r0 er. P Y

The apparatus is so arranged that the small apertures e in the fluid-receptacle a, on which latter the damping-roller b is mounted, shall be opposite the color-ribbon g, led over the said roller 1), and as a result the apertures e are closed by the roller, when the apparatus is at rest, with the cooperation and under the influence of the pressure resulting from the tension of the color-ribbon.-

In Figs. 7 and 8.1 have shown another form of my improved inking device, in which I employ .a frame f for supporting the several parts thereof. In'the modification bend a portion of the tube at right angles to the remainder of the tube, andthis portion extends through openings formed one extremity of the said frame and lies in a horizontal plane. This horizontal portion is provided with a plurality of small apertures e, whichfeed the coloring liquid to an absorbent roller 1), which is mounted on said horizontal ortion. Mountedin said frame above said inking-roller is aribbOn-holding roller g, around which. is wrapped the ribbon g of said tube a. ceptacle' for the coloring matter andhas its uppermost cap 6.

Having now particularly described and ascertained the nature of the said invention and in what manner the same is to be .performed, Ideclare that what I claim is A device of the 'character described comprising a frame, a ribbon-roller mounted in The vertical portion forms the re- L one extremit of said frameyan 1m ervious erf o'ratio'ns ofthe foot of said L-s ha ed 3 P P P roller mounted at the other extremity of said itu'b'e, substantially as described. 10 frame, a substantially Lshdped tube havin II! testimony whereof'l have aflixed my its one end perforated and mounted in sai signature in the'pres'ence of two witnesses. frame and forming a bearing for said imper FRIEDRICH ADOLF LANGEN. vious roller, the stem of said L-shaped tube Witnesses: forming an ink-reeeptacle, said impervious BESSIE- F. DUN'LAP, A

roller adapted to receive the ink; through the LOUIS VANDORY. 

